Efficiency of feeding Duddingtonia flagrans chlamydospores to grazing ewes on reducing availability of parasitic nematode larvae on pasture

Fontenot, M.E.; Miller, James E.; Peña, María; Larsen, M.; Gillespie, A. T.

doi:10.1016/j.vetpar.2003.10.017

Cited by 81 publications

(46 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O controle biológico é uma alternativa sustentável de combate às parasitoses, possibilita redução da freqüência de tratamentos com quimioterápicos (FONTENOT et al, 2003), reduzindo a pressão de seleção de parasitas resistentes, resíduos nos produtos de origem animal e danos ambientais. Por isso, deve receber atenção especial em sistemas de produção que visem o mercado de produtos orgânicos e em locais onde haja resistência múltipla aos antihelmínticos.…”

Section: Controle Biológicounclassified

“…Entre os predadores, os gêneros Arthrobotrys, Monacrosporium e Duddingtonia têm sido apontados como alternativas viáveis para o controle biológico das nematodíases em ruminantes e outros animais domésticos (FONTENOT et al, 2003;ARAÚJO et al, 2006), com destaque para a espécie Duddingtonia flagrans, com resultados positivos em diversos estudos conduzidos em várias regiões do mundo (FAEDO et al, 1998;LARSEN, 2002;CHARTIER & PORS, 2003).…”

Section: Fungos Nematófagosunclassified

See 1 more Smart Citation

Controle alternativo de nematódeos gastrintestinais dos ruminantes: atualidade e perspectivas

2008

View full text Add to dashboard Cite

show abstract

Section: Controle Biológicounclassified

Section: Fungos Nematófagosunclassified

Controle alternativo de nematódeos gastrintestinais dos ruminantes: atualidade e perspectivas

2008

View full text Add to dashboard Cite

show abstract

“…Among the endoparasitic fungi, those reported to infect H. contortus are Drechumeria coniospora and Harposporium anguillulae while Arthrobotrys oligospora and A. robusta are predacious fungi of different species of Haemonchus (Larsen, 2000). A significant breakthrough in this area was reported by a number of studies using the species, Duddingtonia flagrans (Waller et al, 2001;Fontenot et al, 2003;Chandrawathani et al, 2004;Paraud et al, 2005). This predacious fungus produces three dimensional sticky networks, which tightly traps free-living nematode larvae in the faeces ultimately resulting in their death.…”

Section: Biological Control: Use Of Fungal Sporesmentioning

confidence: 99%

Trends and challenges in the effective and sustainable control ofHaemonchus contortusinfection in sheep. Review

2007

View full text Add to dashboard Cite

Summary :Haemonchosis, with its very wide distribution, has become a very important production constraint in sheep farms in tropical, subtropical and temperate regions worldwide. Various intrinsic and extrinsic factors determine the survival of Haemonchus contortus and hence the development of the disease in the animal. In general, control of gastrointestinal nematode infestation in sheep relies heavily on anthelmintic treatments. However, the indiscriminate use of these drugs has led to the widespread emergence of drug resistant strains of parasites, that has necessitated the development and use of various parasite control methods such as grazing management, biological agents and vaccines and the selection of resistant breeds of animals, with or without moderate use of anthelmintics. The ultimate goal of such control programs is to enhance productivity, while minimising risks regarding drug resistance and consumer and environmental concerns. This review attempts to highlight the different methods employed in the control of haemonchosis in sheep and the practical limitations associated with both control programs and the internal and external factors associated with the parasite and its microenvironment. Résumé : MOYENS DE LUTTE CONTRE HAEMONCHUS CONTORTUS

show abstract

“…Studies of nematophagous fungi have shown their great potential as biological control agents against the free-living stage of ruminant gastrointestinal nematodes (PENA et al, 2002;FONTENOT et al, 2003;WALLER et al, 2004;LARSEN, 2006). Additionally, nematophagous fungi can be used together with other control strategies aimed at reducing pasture contamination and decreasing the population of nematodes that parasitize animals in commercial-scale farming systems with high population densities (WALLER; FAEDO, 1993).…”

Section: Introductionmentioning

confidence: 99%

Effect of spraying Arthrobotrys conoides conidia on pastures to control nematode infection in sheep

et al. 2015

View full text Add to dashboard Cite

The effect of spraying pastures with conidia of the fungus Arthrobotrys conoides (GenBank ID: JN191309) for the biological control of gastrointestinal nematode infection-pressure in lambs was assessed. A 12,000-m 2 area was divided into six 2,000-m 2 fenced areas. Two groups were formed: the treatment group comprised three fenced areas, where conidia were sprayed on the pasture weekly at 7.5 x 10 4 conidia m -2 ; and the control group, also comprising three fenced areas, where conidia were not sprayed. The pastures included lopsided oat (Avena strigosa Schreb) and Italian ryegrass (Lolium multiflorum Lam.). Five naturally infected lambs, were placed between July and September in each fenced area. The effectiveness of biological control was assessed between May and September 2009 by counting the number of third-stage larvae (L3) in each pasture. Additionally, the egg output of the sentinel animals was monitored by counting the number of gastrointestinal nematode eggs per gram of faeces (EPG) and the average weight gain was measured. The negative impact on soil was assessed by counting the number of free-living nematodes and phytonematodes. The number of gastrointestinal nematode larvae in the treated pastures decreased. This was significant at two examination days (end August and end of September). At the end of the study, conidia treatment reduced gastrointestinal nematodes on pasture by 52.4% compared to the control group; this difference was statistically significant. Regarding the whole examination period the average reductions in EPG in treatment group was 49.1% compared to the control group. The most common genera of gastrointestinal nematodes were Haemonchus and Trichostrongylus. Animal weight gain and soil nematode counts did not differ significantly.

show abstract

Efficiency of feeding Duddingtonia flagrans chlamydospores to grazing ewes on reducing availability of parasitic nematode larvae on pasture

Cited by 81 publications

References 27 publications

Controle alternativo de nematódeos gastrintestinais dos ruminantes: atualidade e perspectivas

Controle alternativo de nematódeos gastrintestinais dos ruminantes: atualidade e perspectivas

Trends and challenges in the effective and sustainable control ofHaemonchus contortusinfection in sheep. Review

Effect of spraying Arthrobotrys conoides conidia on pastures to control nematode infection in sheep

Contact Info

Product

Resources

About